rcar-gen3: omx-control: Add a python function to check build vp9dec_lib with M3N
rcar-gen3: omx-control: Add a python function to check build vp9dec_lib with M3N

vp9dec_lib only supports M3N (SoC: r8a77965), this commit adds a trap
to prevent building this library with other SoC, in case of wrong
setup, it will cause the error as

| ERROR: omx-user-module-1.0-r0 do_vp9_checking: vp9dec_lib only supports M3N (SoC: r8a77965), please disable this feature in your local configuration
| ERROR: omx-user-module-1.0-r0 do_vp9_checking: Function failed: do_vp9_checking

Signed-off-by: Khang Nguyen <4af36419d9e231a1ac94e51a9ad2c30dc32c71dc@rvc.renesas.com>
Signed-off-by: Takamitsu Honda <dd018642994e4b3e742377b6d773664f62294df8@renesas.com>

renesas-rcar/meta-renesas,renesas-rcar/meta-renesas,renesas-rcar/meta-renesas,renesas-rcar/meta-renesas